.Dd May 16, 2017
.Dt AU 7
.Os
.Sh NAME
.Nm au
.Nd a simple uncompressed audio file-format
.Sh DESCRIPTION
The
.Nm
file-format is a big-endian format which consists of a header followed
by audio data.
.Pp
The header has six 32-bit fields
.Bl -tag -width Ds
.It magic-number
Equivalent to the ASCII string
.Dq \.snd .
.It offset
The offset, in octets, from the beginning of the file to the start of
the audio data.
.It size
The size, in octets, of the audio data with the maximum value indicating
an indeterminate size.
.It encoding
The encoding of the audio data.
.It sample-rate
The sample-rate of the audio data.
.It channels
The number of channels in the audio data.
.El
.Sh SEE ALSO
.Xr au 4
.Xr auconv 1
.Xr auopen 1
.Xr audev 1
.Xr au2file 1
.Xr file2au 1
.Xr audio 4
.Xr audioconvert 1
.Xr audioplay 1
.Xr audiorecord 1
.Xr audiotest 1
.Sh HISTORY
The
.Nm
file-format was introduced on SunOS.
